redi主题的文章列表，还有redi的技术要点_第3页

ORA-48487: The internal predicate string exceeds the maximum length [string]

文档解释ORA-48487:Theinternalpredicatestringexceedsthemaximumlength[string]Cause:ThepredicatestringexceedsthemaximumlengthAction:ReporttoOracle。ORA-48487错误，通常发生在Ora...

IT技术学习 ·2023-07-11

ORA-25958: join index where clause predicate may only contain column references

文档解释ORA-25958:joinindexwhereclausepredicatemayonlycontaincolumnreferencesCause:Anattempttocreateajoinindexwasmade,whichfailedbecauseapredicateinthewhereclauseco...

IT技术学习 ·2023-07-11

ORA-41698: invalid use of “string” attribute in aggregate predicate

文档解释ORA-41698:invaliduseof“string”attributeinaggregatepredicateCause:Anattemptwasmadetouseanattributewherealiteralisexpectedintheaggregatepredicatei...

IT技术学习 ·2023-07-11

ORA-40293: input class is invalid for the specified predictive model

文档解释ORA-40293:inputclassisinvalidforthespecifiedpredictivemodelCause:Thespecifiedmodeliseithernotaclassificationmodel,ordoesnothavetheinputclasslabelasoneofitst...

IT技术学习 ·2023-07-10

ORA-28111: insufficient privilege to evaluate policy predicate

文档解释ORA-28111:insufficientprivilegetoevaluatepolicypredicateCause:Predicatehasasubquerywhichcontainsobjectsthattheownerofpolicyfunctiondoesnothaveprivilegetoacc...

IT技术学习 ·2023-07-10

ORA-48231: Predicate syntax error

文档解释ORA-48231:PredicatesyntaxerrorCause:Asyntaxerrorexistsinthepredicatestring.Action:Correctthepredicate.。ORA-48231表示断言（Predicate）语法错误。断言语法错误发生时，Oracle数据库引擎（DB...

IT技术学习 ·2023-07-09

ORA-48222: Predicates/Order By Not Allowed

文档解释ORA-48222:Predicates/OrderByNotAllowedCause:Apredicateororderbycannotbeaddedafterfetchhasstarted.Action:Putthepredicateororderbycallbeforethefirstfetch.ORA-...

IT技术学习 ·2023-07-08

ORA-46004: Predicate “string”is not valid in Data Security Document

文档解释ORA-46004:Predicate“string”isnotvalidinDataSecurityDocumentCause:AninvalidpredicatewasspecifiedintheDataSecurityDocument.Action:Correctthepredic...

IT技术学习 ·2023-07-08

ORA-38448: Indexing predicates with “string” operator is not supported.

文档解释ORA-38448:Indexingpredicateswith“string”operatorisnotsupported.Cause:Anunsupportedoperatorwasusedintheexf$indexoperarray.Action:Choosetheoperato...

IT技术学习 ·2023-07-08

ORA-44735: Too many predicates

文档解释ORA-44735:ToomanypredicatesCause:Numberofpredicatesweremorethanlimit.Action:Tryreducingnumberofpredicates.ORA-44735：该错误表明SQL语句中含有过多的谓词（predicates）。官方解释ORA-4...

IT技术学习 ·2023-07-08

Redis在Windows环境配置多实例多端口运行

Redis是一种跨平台NoSql内存数据库，这几年各大公司系统应用中非常多见，支持多种数据类型，可以持久化保存数据，很多公司直接拿来作为数据库使用.相比于Memcached,Redis支持持久化保存数据，重启服务,数据不丢失，支持分布式缓存，多个服务主从读写分离,大大提高效率。网上可下载https://github.c...

代码星球 ·2023-05-06

Linux 基于源码安装 Redis

1.下载Redis：　　　前往Redis官网复制Redis相应版本的下载链接，到终端下载2.进入到指定目录，下载redis.tar.gz包，运行wget+复制的下载链接例如：wgethttps://download.redis.io/redis-stable.tar.gz　　 3. 等待...

开发笔记 ·2023-04-28

php+redis实现超时取消订单功能

业务场景：秒杀案例秒杀业务逻辑：多个用户同时抢单，通过mysql行锁抢到的用户进入待支付页面（倒计时）。当用户没有支付订单超时时则取消该订单并归还库存。应用thinkphp+redis+workerman（可以自定义命令常驻）1、thinkphp安装workerman。这里就过了，thinkphp手册去找。2、安装好r...

开发笔记 ·2023-04-20

C# Predicate<T>

C#Predicate<T>中，它是指参数为1个，返回值类型为bool的委托。public T Do<T>(Predicate<T> check, T value, T defaultValue){if ...

代码星球 ·2023-04-16

使用info命令获取 redis 服务详细信息

redis 127.0.0.1:6379> INFO# Serverredis_version:2.8.13redis_git_sha1:00000000redis_git_dirty:0redis_build_id:c2238b38b1edb0e2redis_mode:standa...

开发笔记 ·2023-07-26